freshlybakedca.ke
Git fork
1#define USE_THE_REPOSITORY_VARIABLE
2#define DISABLE_SIGN_COMPARE_WARNINGS
3
4#include "git-compat-util.h"
5#include "config.h"
6#include "commit.h"
7#include "environment.h"
8#include "gettext.h"
9#include "hash.h"
10#include "hex.h"
11#include "utf8.h"
12#include "diff.h"
13#include "pager.h"
14#include "revision.h"
15#include "string-list.h"
16#include "mailmap.h"
17#include "log-tree.h"
18#include "notes.h"
19#include "color.h"
20#include "reflog-walk.h"
21#include "gpg-interface.h"
22#include "trailer.h"
23#include "run-command.h"
24#include "object-name.h"
25
26/*
27 * The limit for formatting directives, which enable the caller to append
28 * arbitrarily many bytes to the formatted buffer. This includes padding
29 * and wrapping formatters.
30 */
31#define FORMATTING_LIMIT (16 * 1024)
32
33static char *user_format;
34static struct cmt_fmt_map {
35 const char *name;
36 enum cmit_fmt format;
37 int is_tformat;
38 int expand_tabs_in_log;
39 int is_alias;
40 enum date_mode_type default_date_mode_type;
41 const char *user_format;
42} *commit_formats;
43static size_t builtin_formats_len;
44static size_t commit_formats_len;
45static size_t commit_formats_alloc;
46static struct cmt_fmt_map *find_commit_format(const char *sought);
47
48int commit_format_is_empty(enum cmit_fmt fmt)
49{
50 return fmt == CMIT_FMT_USERFORMAT && !*user_format;
51}
52
53static void save_user_format(struct rev_info *rev, const char *cp, int is_tformat)
54{
55 free(user_format);
56 user_format = xstrdup(cp);
57 if (is_tformat)
58 rev->use_terminator = 1;
59 rev->commit_format = CMIT_FMT_USERFORMAT;
60}
61
62static int git_pretty_formats_config(const char *var, const char *value,
63 const struct config_context *ctx UNUSED,
64 void *cb UNUSED)
65{
66 struct cmt_fmt_map *commit_format = NULL;
67 const char *name, *stripped;
68 char *fmt;
69 int i;
70
71 if (!skip_prefix(var, "pretty.", &name))
72 return 0;
73
74 for (i = 0; i < builtin_formats_len; i++) {
75 if (!strcmp(commit_formats[i].name, name))
76 return 0;
77 }
78
79 for (i = builtin_formats_len; i < commit_formats_len; i++) {
80 if (!strcmp(commit_formats[i].name, name)) {
81 commit_format = &commit_formats[i];
82 break;
83 }
84 }
85
86 if (!commit_format) {
87 ALLOC_GROW(commit_formats, commit_formats_len+1,
88 commit_formats_alloc);
89 commit_format = &commit_formats[commit_formats_len];
90 memset(commit_format, 0, sizeof(*commit_format));
91 commit_formats_len++;
92 }
93
94 free((char *)commit_format->name);
95 commit_format->name = xstrdup(name);
96 commit_format->format = CMIT_FMT_USERFORMAT;
97 if (git_config_string(&fmt, var, value))
98 return -1;
99
100 free((char *)commit_format->user_format);
101 if (skip_prefix(fmt, "format:", &stripped)) {
102 commit_format->is_tformat = 0;
103 commit_format->user_format = xstrdup(stripped);
104 free(fmt);
105 } else if (skip_prefix(fmt, "tformat:", &stripped)) {
106 commit_format->is_tformat = 1;
107 commit_format->user_format = xstrdup(stripped);
108 free(fmt);
109 } else if (strchr(fmt, '%')) {
110 commit_format->is_tformat = 1;
111 commit_format->user_format = fmt;
112 } else {
113 commit_format->is_alias = 1;
114 commit_format->user_format = fmt;
115 }
116
117 return 0;
118}
119
120static void setup_commit_formats(void)
121{
122 struct cmt_fmt_map builtin_formats[] = {
123 { "raw", CMIT_FMT_RAW, 0, 0 },
124 { "medium", CMIT_FMT_MEDIUM, 0, 8 },
125 { "short", CMIT_FMT_SHORT, 0, 0 },
126 { "email", CMIT_FMT_EMAIL, 0, 0 },
127 { "mboxrd", CMIT_FMT_MBOXRD, 0, 0 },
128 { "fuller", CMIT_FMT_FULLER, 0, 8 },
129 { "full", CMIT_FMT_FULL, 0, 8 },
130 { "oneline", CMIT_FMT_ONELINE, 1, 0 },
131 { "reference", CMIT_FMT_USERFORMAT, 1, 0,
132 0, DATE_SHORT, "%C(auto)%h (%s, %ad)" },
133 /*
134 * Please update $__git_log_pretty_formats in
135 * git-completion.bash when you add new formats.
136 */
137 };
138 commit_formats_len = ARRAY_SIZE(builtin_formats);
139 builtin_formats_len = commit_formats_len;
140 ALLOC_GROW(commit_formats, commit_formats_len, commit_formats_alloc);
141 COPY_ARRAY(commit_formats, builtin_formats,
142 ARRAY_SIZE(builtin_formats));
143
144 repo_config(the_repository, git_pretty_formats_config, NULL);
145}
146
147static struct cmt_fmt_map *find_commit_format_recursive(const char *sought,
148 const char *original,
149 int num_redirections)
150{
151 struct cmt_fmt_map *found = NULL;
152 size_t found_match_len = 0;
153 int i;
154
155 if (num_redirections >= commit_formats_len)
156 die("invalid --pretty format: "
157 "'%s' references an alias which points to itself",
158 original);
159
160 for (i = 0; i < commit_formats_len; i++) {
161 size_t match_len;
162
163 if (!istarts_with(commit_formats[i].name, sought))
164 continue;
165
166 match_len = strlen(commit_formats[i].name);
167 if (found == NULL || found_match_len > match_len) {
168 found = &commit_formats[i];
169 found_match_len = match_len;
170 }
171 }
172
173 if (found && found->is_alias) {
174 found = find_commit_format_recursive(found->user_format,
175 original,
176 num_redirections+1);
177 }
178
179 return found;
180}
181
182static struct cmt_fmt_map *find_commit_format(const char *sought)
183{
184 if (!commit_formats)
185 setup_commit_formats();
186
187 return find_commit_format_recursive(sought, sought, 0);
188}
189
190void get_commit_format(const char *arg, struct rev_info *rev)
191{
192 struct cmt_fmt_map *commit_format;
193
194 rev->use_terminator = 0;
195 if (!arg) {
196 rev->commit_format = CMIT_FMT_DEFAULT;
197 return;
198 }
199 if (skip_prefix(arg, "format:", &arg)) {
200 save_user_format(rev, arg, 0);
201 return;
202 }
203
204 if (!*arg || skip_prefix(arg, "tformat:", &arg) || strchr(arg, '%')) {
205 save_user_format(rev, arg, 1);
206 return;
207 }
208
209 commit_format = find_commit_format(arg);
210 if (!commit_format)
211 die("invalid --pretty format: %s", arg);
212
213 rev->commit_format = commit_format->format;
214 rev->use_terminator = commit_format->is_tformat;
215 rev->expand_tabs_in_log_default = commit_format->expand_tabs_in_log;
216 if (!rev->date_mode_explicit && commit_format->default_date_mode_type)
217 rev->date_mode.type = commit_format->default_date_mode_type;
218 if (commit_format->format == CMIT_FMT_USERFORMAT) {
219 save_user_format(rev, commit_format->user_format,
220 commit_format->is_tformat);
221 }
222}
223
224/*
225 * Generic support for pretty-printing the header
226 */
227static int get_one_line(const char *msg)
228{
229 int ret = 0;
230
231 for (;;) {
232 char c = *msg++;
233 if (!c)
234 break;
235 ret++;
236 if (c == '\n')
237 break;
238 }
239 return ret;
240}
241
242/* High bit set, or ISO-2022-INT */
243static int non_ascii(int ch)
244{
245 return !isascii(ch) || ch == '\033';
246}
247
248int has_non_ascii(const char *s)
249{
250 int ch;
251 if (!s)
252 return 0;
253 while ((ch = *s++) != '\0') {
254 if (non_ascii(ch))
255 return 1;
256 }
257 return 0;
258}
259
260static int is_rfc822_special(char ch)
261{
262 switch (ch) {
263 case '(':
264 case ')':
265 case '<':
266 case '>':
267 case '[':
268 case ']':
269 case ':':
270 case ';':
271 case '@':
272 case ',':
273 case '.':
274 case '"':
275 case '\\':
276 return 1;
277 default:
278 return 0;
279 }
280}
281
282static int needs_rfc822_quoting(const char *s, int len)
283{
284 int i;
285 for (i = 0; i < len; i++)
286 if (is_rfc822_special(s[i]))
287 return 1;
288 return 0;
289}
290
291static int last_line_length(struct strbuf *sb)
292{
293 int i;
294
295 /* How many bytes are already used on the last line? */
296 for (i = sb->len - 1; i >= 0; i--)
297 if (sb->buf[i] == '\n')
298 break;
299 return sb->len - (i + 1);
300}
301
302static void add_rfc822_quoted(struct strbuf *out, const char *s, int len)
303{
304 int i;
305
306 /* just a guess, we may have to also backslash-quote */
307 strbuf_grow(out, len + 2);
308
309 strbuf_addch(out, '"');
310 for (i = 0; i < len; i++) {
311 switch (s[i]) {
312 case '"':
313 case '\\':
314 strbuf_addch(out, '\\');
315 /* fall through */
316 default:
317 strbuf_addch(out, s[i]);
318 }
319 }
320 strbuf_addch(out, '"');
321}
322
323enum rfc2047_type {
324 RFC2047_SUBJECT,
325 RFC2047_ADDRESS
326};
327
328static int is_rfc2047_special(char ch, enum rfc2047_type type)
329{
330 /*
331 * rfc2047, section 4.2:
332 *
333 * 8-bit values which correspond to printable ASCII characters other
334 * than "=", "?", and "_" (underscore), MAY be represented as those
335 * characters. (But see section 5 for restrictions.) In
336 * particular, SPACE and TAB MUST NOT be represented as themselves
337 * within encoded words.
338 */
339
340 /*
341 * rule out non-ASCII characters and non-printable characters (the
342 * non-ASCII check should be redundant as isprint() is not localized
343 * and only knows about ASCII, but be defensive about that)
344 */
345 if (non_ascii(ch) || !isprint(ch))
346 return 1;
347
348 /*
349 * rule out special printable characters (' ' should be the only
350 * whitespace character considered printable, but be defensive and use
351 * isspace())
352 */
353 if (isspace(ch) || ch == '=' || ch == '?' || ch == '_')
354 return 1;
355
356 /*
357 * rfc2047, section 5.3:
358 *
359 * As a replacement for a 'word' entity within a 'phrase', for example,
360 * one that precedes an address in a From, To, or Cc header. The ABNF
361 * definition for 'phrase' from RFC 822 thus becomes:
362 *
363 * phrase = 1*( encoded-word / word )
364 *
365 * In this case the set of characters that may be used in a "Q"-encoded
366 * 'encoded-word' is restricted to: <upper and lower case ASCII
367 * letters, decimal digits, "!", "*", "+", "-", "/", "=", and "_"
368 * (underscore, ASCII 95.)>. An 'encoded-word' that appears within a
369 * 'phrase' MUST be separated from any adjacent 'word', 'text' or
370 * 'special' by 'linear-white-space'.
371 */
372
373 if (type != RFC2047_ADDRESS)
374 return 0;
375
376 /* '=' and '_' are special cases and have been checked above */
377 return !(isalnum(ch) || ch == '!' || ch == '*' || ch == '+' || ch == '-' || ch == '/');
378}
379
380static int needs_rfc2047_encoding(const char *line, int len)
381{
382 int i;
383
384 for (i = 0; i < len; i++) {
385 int ch = line[i];
386 if (non_ascii(ch) || ch == '\n')
387 return 1;
388 if ((i + 1 < len) && (ch == '=' && line[i+1] == '?'))
389 return 1;
390 }
391
392 return 0;
393}
394
395static void add_rfc2047(struct strbuf *sb, const char *line, size_t len,
396 const char *encoding, enum rfc2047_type type)
397{
398 static const int max_encoded_length = 76; /* per rfc2047 */
399 int i;
400 int line_len = last_line_length(sb);
401
402 strbuf_grow(sb, len * 3 + strlen(encoding) + 100);
403 strbuf_addf(sb, "=?%s?q?", encoding);
404 line_len += strlen(encoding) + 5; /* 5 for =??q? */
405
406 while (len) {
407 /*
408 * RFC 2047, section 5 (3):
409 *
410 * Each 'encoded-word' MUST represent an integral number of
411 * characters. A multi-octet character may not be split across
412 * adjacent 'encoded- word's.
413 */
414 const unsigned char *p = (const unsigned char *)line;
415 int chrlen = mbs_chrlen(&line, &len, encoding);
416 int is_special = (chrlen > 1) || is_rfc2047_special(*p, type);
417
418 /* "=%02X" * chrlen, or the byte itself */
419 const char *encoded_fmt = is_special ? "=%02X" : "%c";
420 int encoded_len = is_special ? 3 * chrlen : 1;
421
422 /*
423 * According to RFC 2047, we could encode the special character
424 * ' ' (space) with '_' (underscore) for readability. But many
425 * programs do not understand this and just leave the
426 * underscore in place. Thus, we do nothing special here, which
427 * causes ' ' to be encoded as '=20', avoiding this problem.
428 */
429
430 if (line_len + encoded_len + 2 > max_encoded_length) {
431 /* It won't fit with trailing "?=" --- break the line */
432 strbuf_addf(sb, "?=\n =?%s?q?", encoding);
433 line_len = strlen(encoding) + 5 + 1; /* =??q? plus SP */
434 }
435
436 for (i = 0; i < chrlen; i++)
437 strbuf_addf(sb, encoded_fmt, p[i]);
438 line_len += encoded_len;
439 }
440 strbuf_addstr(sb, "?=");
441}
442
443const char *show_ident_date(const struct ident_split *ident,
444 struct date_mode mode)
445{
446 timestamp_t date = 0;
447 long tz = 0;
448
449 if (ident->date_begin && ident->date_end)
450 date = parse_timestamp(ident->date_begin, NULL, 10);
451 if (date_overflows(date))
452 date = 0;
453 else {
454 if (ident->tz_begin && ident->tz_end)
455 tz = strtol(ident->tz_begin, NULL, 10);
456 if (tz >= INT_MAX || tz <= INT_MIN)
457 tz = 0;
458 }
459 return show_date(date, tz, mode);
460}
461
462static inline void strbuf_add_with_color(struct strbuf *sb, const char *color,
463 const char *buf, size_t buflen)
464{
465 strbuf_addstr(sb, color);
466 strbuf_add(sb, buf, buflen);
467 if (*color)
468 strbuf_addstr(sb, GIT_COLOR_RESET);
469}
470
471static void append_line_with_color(struct strbuf *sb, struct grep_opt *opt,
472 const char *line, size_t linelen,
473 enum git_colorbool color, enum grep_context ctx,
474 enum grep_header_field field)
475{
476 const char *buf, *eol, *line_color, *match_color;
477 regmatch_t match;
478 int eflags = 0;
479
480 buf = line;
481 eol = buf + linelen;
482
483 if (!opt || !want_color(color) || opt->invert)
484 goto end;
485
486 line_color = opt->colors[GREP_COLOR_SELECTED];
487 match_color = opt->colors[GREP_COLOR_MATCH_SELECTED];
488
489 while (grep_next_match(opt, buf, eol, ctx, &match, field, eflags)) {
490 if (match.rm_so == match.rm_eo)
491 break;
492
493 strbuf_add_with_color(sb, line_color, buf, match.rm_so);
494 strbuf_add_with_color(sb, match_color, buf + match.rm_so,
495 match.rm_eo - match.rm_so);
496 buf += match.rm_eo;
497 eflags = REG_NOTBOL;
498 }
499
500 if (eflags)
501 strbuf_add_with_color(sb, line_color, buf, eol - buf);
502 else {
503end:
504 strbuf_add(sb, buf, eol - buf);
505 }
506}
507
508static int use_in_body_from(const struct pretty_print_context *pp,
509 const struct ident_split *ident)
510{
511 if (pp->rev && pp->rev->force_in_body_from)
512 return 1;
513 if (ident_cmp(pp->from_ident, ident))
514 return 1;
515 return 0;
516}
517
518void pp_user_info(struct pretty_print_context *pp,
519 const char *what, struct strbuf *sb,
520 const char *line, const char *encoding)
521{
522 struct ident_split ident;
523 char *line_end;
524 const char *mailbuf, *namebuf;
525 size_t namelen, maillen;
526 int max_length = 78; /* per rfc2822 */
527
528 if (pp->fmt == CMIT_FMT_ONELINE)
529 return;
530
531 line_end = strchrnul(line, '\n');
532 if (split_ident_line(&ident, line, line_end - line))
533 return;
534
535 mailbuf = ident.mail_begin;
536 maillen = ident.mail_end - ident.mail_begin;
537 namebuf = ident.name_begin;
538 namelen = ident.name_end - ident.name_begin;
539
540 if (pp->mailmap)
541 map_user(pp->mailmap, &mailbuf, &maillen, &namebuf, &namelen);
542
543 if (cmit_fmt_is_mail(pp->fmt)) {
544 if (pp->from_ident && use_in_body_from(pp, &ident)) {
545 struct strbuf buf = STRBUF_INIT;
546
547 strbuf_addstr(&buf, "From: ");
548 strbuf_add(&buf, namebuf, namelen);
549 strbuf_addstr(&buf, " <");
550 strbuf_add(&buf, mailbuf, maillen);
551 strbuf_addstr(&buf, ">\n");
552 string_list_append(&pp->in_body_headers,
553 strbuf_detach(&buf, NULL));
554
555 mailbuf = pp->from_ident->mail_begin;
556 maillen = pp->from_ident->mail_end - mailbuf;
557 namebuf = pp->from_ident->name_begin;
558 namelen = pp->from_ident->name_end - namebuf;
559 }
560
561 strbuf_addstr(sb, "From: ");
562 if (pp->encode_email_headers &&
563 needs_rfc2047_encoding(namebuf, namelen)) {
564 add_rfc2047(sb, namebuf, namelen,
565 encoding, RFC2047_ADDRESS);
566 max_length = 76; /* per rfc2047 */
567 } else if (needs_rfc822_quoting(namebuf, namelen)) {
568 struct strbuf quoted = STRBUF_INIT;
569 add_rfc822_quoted("ed, namebuf, namelen);
570 strbuf_add_wrapped_bytes(sb, quoted.buf, quoted.len,
571 -6, 1, max_length);
572 strbuf_release("ed);
573 } else {
574 strbuf_add_wrapped_bytes(sb, namebuf, namelen,
575 -6, 1, max_length);
576 }
577
578 if (max_length <
579 last_line_length(sb) + strlen(" <") + maillen + strlen(">"))
580 strbuf_addch(sb, '\n');
581 strbuf_addf(sb, " <%.*s>\n", (int)maillen, mailbuf);
582 } else {
583 struct strbuf id = STRBUF_INIT;
584 enum grep_header_field field = GREP_HEADER_FIELD_MAX;
585 struct grep_opt *opt = pp->rev ? &pp->rev->grep_filter : NULL;
586
587 if (!strcmp(what, "Author"))
588 field = GREP_HEADER_AUTHOR;
589 else if (!strcmp(what, "Commit"))
590 field = GREP_HEADER_COMMITTER;
591
592 strbuf_addf(sb, "%s: ", what);
593 if (pp->fmt == CMIT_FMT_FULLER)
594 strbuf_addchars(sb, ' ', 4);
595
596 strbuf_addf(&id, "%.*s <%.*s>", (int)namelen, namebuf,
597 (int)maillen, mailbuf);
598
599 append_line_with_color(sb, opt, id.buf, id.len, pp->color,
600 GREP_CONTEXT_HEAD, field);
601 strbuf_addch(sb, '\n');
602 strbuf_release(&id);
603 }
604
605 switch (pp->fmt) {
606 case CMIT_FMT_MEDIUM:
607 strbuf_addf(sb, "Date: %s\n",
608 show_ident_date(&ident, pp->date_mode));
609 break;
610 case CMIT_FMT_EMAIL:
611 case CMIT_FMT_MBOXRD:
612 strbuf_addf(sb, "Date: %s\n",
613 show_ident_date(&ident, DATE_MODE(RFC2822)));
614 break;
615 case CMIT_FMT_FULLER:
616 strbuf_addf(sb, "%sDate: %s\n", what,
617 show_ident_date(&ident, pp->date_mode));
618 break;
619 default:
620 /* notin' */
621 break;
622 }
623}
624
625static int is_blank_line(const char *line, int *len_p)
626{
627 int len = *len_p;
628 while (len && isspace(line[len - 1]))
629 len--;
630 *len_p = len;
631 return !len;
632}
633
634const char *skip_blank_lines(const char *msg)
635{
636 for (;;) {
637 int linelen = get_one_line(msg);
638 int ll = linelen;
639 if (!linelen)
640 break;
641 if (!is_blank_line(msg, &ll))
642 break;
643 msg += linelen;
644 }
645 return msg;
646}
647
648static void add_merge_info(const struct pretty_print_context *pp,
649 struct strbuf *sb, const struct commit *commit)
650{
651 struct commit_list *parent = commit->parents;
652
653 if ((pp->fmt == CMIT_FMT_ONELINE) || (cmit_fmt_is_mail(pp->fmt)) ||
654 !parent || !parent->next)
655 return;
656
657 strbuf_addstr(sb, "Merge:");
658
659 while (parent) {
660 struct object_id *oidp = &parent->item->object.oid;
661 strbuf_addch(sb, ' ');
662 if (pp->abbrev)
663 strbuf_add_unique_abbrev(sb, oidp, pp->abbrev);
664 else
665 strbuf_addstr(sb, oid_to_hex(oidp));
666 parent = parent->next;
667 }
668 strbuf_addch(sb, '\n');
669}
670
671static char *get_header(const char *msg, const char *key)
672{
673 size_t len;
674 const char *v = find_commit_header(msg, key, &len);
675 return v ? xmemdupz(v, len) : NULL;
676}
677
678static char *replace_encoding_header(char *buf, const char *encoding)
679{
680 struct strbuf tmp = STRBUF_INIT;
681 size_t start, len;
682 char *cp = buf;
683
684 /* guess if there is an encoding header before a \n\n */
685 while (!starts_with(cp, "encoding ")) {
686 cp = strchr(cp, '\n');
687 if (!cp || *++cp == '\n')
688 return buf;
689 }
690 start = cp - buf;
691 cp = strchr(cp, '\n');
692 if (!cp)
693 return buf; /* should not happen but be defensive */
694 len = cp + 1 - (buf + start);
695
696 strbuf_attach(&tmp, buf, strlen(buf), strlen(buf) + 1);
697 if (is_encoding_utf8(encoding)) {
698 /* we have re-coded to UTF-8; drop the header */
699 strbuf_remove(&tmp, start, len);
700 } else {
701 /* just replaces XXXX in 'encoding XXXX\n' */
702 strbuf_splice(&tmp, start + strlen("encoding "),
703 len - strlen("encoding \n"),
704 encoding, strlen(encoding));
705 }
706 return strbuf_detach(&tmp, NULL);
707}
708
709const char *repo_logmsg_reencode(struct repository *r,
710 const struct commit *commit,
711 char **commit_encoding,
712 const char *output_encoding)
713{
714 static const char *utf8 = "UTF-8";
715 const char *use_encoding;
716 char *encoding;
717 const char *msg = repo_get_commit_buffer(r, commit, NULL);
718 char *out;
719
720 if (!output_encoding || !*output_encoding) {
721 if (commit_encoding)
722 *commit_encoding = get_header(msg, "encoding");
723 return msg;
724 }
725 encoding = get_header(msg, "encoding");
726 if (commit_encoding)
727 *commit_encoding = encoding;
728 use_encoding = encoding ? encoding : utf8;
729 if (same_encoding(use_encoding, output_encoding)) {
730 /*
731 * No encoding work to be done. If we have no encoding header
732 * at all, then there's nothing to do, and we can return the
733 * message verbatim (whether newly allocated or not).
734 */
735 if (!encoding)
736 return msg;
737
738 /*
739 * Otherwise, we still want to munge the encoding header in the
740 * result, which will be done by modifying the buffer. If we
741 * are using a fresh copy, we can reuse it. But if we are using
742 * the cached copy from repo_get_commit_buffer, we need to duplicate it
743 * to avoid munging the cached copy.
744 */
745 if (msg == get_cached_commit_buffer(r, commit, NULL))
746 out = xstrdup(msg);
747 else
748 out = (char *)msg;
749 }
750 else {
751 /*
752 * There's actual encoding work to do. Do the reencoding, which
753 * still leaves the header to be replaced in the next step. At
754 * this point, we are done with msg. If we allocated a fresh
755 * copy, we can free it.
756 */
757 out = reencode_string(msg, output_encoding, use_encoding);
758 if (out)
759 repo_unuse_commit_buffer(r, commit, msg);
760 }
761
762 /*
763 * This replacement actually consumes the buffer we hand it, so we do
764 * not have to worry about freeing the old "out" here.
765 */
766 if (out)
767 out = replace_encoding_header(out, output_encoding);
768
769 if (!commit_encoding)
770 free(encoding);
771 /*
772 * If the re-encoding failed, out might be NULL here; in that
773 * case we just return the commit message verbatim.
774 */
775 return out ? out : msg;
776}
777
778static int mailmap_name(const char **email, size_t *email_len,
779 const char **name, size_t *name_len)
780{
781 static struct string_list *mail_map;
782 if (!mail_map) {
783 CALLOC_ARRAY(mail_map, 1);
784 read_mailmap(mail_map);
785 }
786 return mail_map->nr && map_user(mail_map, email, email_len, name, name_len);
787}
788
789static size_t format_person_part(struct strbuf *sb, char part,
790 const char *msg, int len,
791 struct date_mode dmode)
792{
793 /* currently all placeholders have same length */
794 const int placeholder_len = 2;
795 struct ident_split s;
796 const char *name, *mail;
797 size_t maillen, namelen;
798
799 if (split_ident_line(&s, msg, len) < 0)
800 goto skip;
801
802 name = s.name_begin;
803 namelen = s.name_end - s.name_begin;
804 mail = s.mail_begin;
805 maillen = s.mail_end - s.mail_begin;
806
807 if (part == 'N' || part == 'E' || part == 'L') /* mailmap lookup */
808 mailmap_name(&mail, &maillen, &name, &namelen);
809 if (part == 'n' || part == 'N') { /* name */
810 strbuf_add(sb, name, namelen);
811 return placeholder_len;
812 }
813 if (part == 'e' || part == 'E') { /* email */
814 strbuf_add(sb, mail, maillen);
815 return placeholder_len;
816 }
817 if (part == 'l' || part == 'L') { /* local-part */
818 const char *at = memchr(mail, '@', maillen);
819 if (at)
820 maillen = at - mail;
821 strbuf_add(sb, mail, maillen);
822 return placeholder_len;
823 }
824
825 if (!s.date_begin)
826 goto skip;
827
828 if (part == 't') { /* date, UNIX timestamp */
829 strbuf_add(sb, s.date_begin, s.date_end - s.date_begin);
830 return placeholder_len;
831 }
832
833 switch (part) {
834 case 'd': /* date */
835 strbuf_addstr(sb, show_ident_date(&s, dmode));
836 return placeholder_len;
837 case 'D': /* date, RFC2822 style */
838 strbuf_addstr(sb, show_ident_date(&s, DATE_MODE(RFC2822)));
839 return placeholder_len;
840 case 'r': /* date, relative */
841 strbuf_addstr(sb, show_ident_date(&s, DATE_MODE(RELATIVE)));
842 return placeholder_len;
843 case 'i': /* date, ISO 8601-like */
844 strbuf_addstr(sb, show_ident_date(&s, DATE_MODE(ISO8601)));
845 return placeholder_len;
846 case 'I': /* date, ISO 8601 strict */
847 strbuf_addstr(sb, show_ident_date(&s, DATE_MODE(ISO8601_STRICT)));
848 return placeholder_len;
849 case 'h': /* date, human */
850 strbuf_addstr(sb, show_ident_date(&s, DATE_MODE(HUMAN)));
851 return placeholder_len;
852 case 's':
853 strbuf_addstr(sb, show_ident_date(&s, DATE_MODE(SHORT)));
854 return placeholder_len;
855 }
856
857skip:
858 /*
859 * reading from either a bogus commit, or a reflog entry with
860 * %gn, %ge, etc.; 'sb' cannot be updated, but we still need
861 * to compute a valid return value.
862 */
863 if (part == 'n' || part == 'e' || part == 't' || part == 'd'
864 || part == 'D' || part == 'r' || part == 'i')
865 return placeholder_len;
866
867 return 0; /* unknown placeholder */
868}
869
870struct chunk {
871 size_t off;
872 size_t len;
873};
874
875enum flush_type {
876 no_flush,
877 flush_right,
878 flush_left,
879 flush_left_and_steal,
880 flush_both
881};
882
883enum trunc_type {
884 trunc_none,
885 trunc_left,
886 trunc_middle,
887 trunc_right
888};
889
890struct format_commit_context {
891 struct repository *repository;
892 const struct commit *commit;
893 const struct pretty_print_context *pretty_ctx;
894 unsigned commit_header_parsed:1;
895 unsigned commit_message_parsed:1;
896 struct signature_check signature_check;
897 enum flush_type flush_type;
898 enum trunc_type truncate;
899 const char *message;
900 char *commit_encoding;
901 size_t width, indent1, indent2;
902 enum git_colorbool auto_color;
903 int padding;
904
905 /* These offsets are relative to the start of the commit message. */
906 struct chunk author;
907 struct chunk committer;
908 size_t message_off;
909 size_t subject_off;
910 size_t body_off;
911
912 /* The following ones are relative to the result struct strbuf. */
913 size_t wrap_start;
914};
915
916static void parse_commit_header(struct format_commit_context *context)
917{
918 const char *msg = context->message;
919 int i;
920
921 for (i = 0; msg[i]; i++) {
922 const char *name;
923 int eol;
924 for (eol = i; msg[eol] && msg[eol] != '\n'; eol++)
925 ; /* do nothing */
926
927 if (i == eol) {
928 break;
929 } else if (skip_prefix(msg + i, "author ", &name)) {
930 context->author.off = name - msg;
931 context->author.len = msg + eol - name;
932 } else if (skip_prefix(msg + i, "committer ", &name)) {
933 context->committer.off = name - msg;
934 context->committer.len = msg + eol - name;
935 }
936 i = eol;
937 }
938 context->message_off = i;
939 context->commit_header_parsed = 1;
940}
941
942static int istitlechar(char c)
943{
944 return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
945 (c >= '0' && c <= '9') || c == '.' || c == '_';
946}
947
948void format_sanitized_subject(struct strbuf *sb, const char *msg, size_t len)
949{
950 size_t trimlen;
951 size_t start_len = sb->len;
952 int space = 2;
953 int i;
954
955 for (i = 0; i < len; i++) {
956 if (istitlechar(msg[i])) {
957 if (space == 1)
958 strbuf_addch(sb, '-');
959 space = 0;
960 strbuf_addch(sb, msg[i]);
961 if (msg[i] == '.')
962 while (msg[i+1] == '.')
963 i++;
964 } else
965 space |= 1;
966 }
967
968 /* trim any trailing '.' or '-' characters */
969 trimlen = 0;
970 while (sb->len - trimlen > start_len &&
971 (sb->buf[sb->len - 1 - trimlen] == '.'
972 || sb->buf[sb->len - 1 - trimlen] == '-'))
973 trimlen++;
974 strbuf_remove(sb, sb->len - trimlen, trimlen);
975}
976
977const char *format_subject(struct strbuf *sb, const char *msg,
978 const char *line_separator)
979{
980 int first = 1;
981
982 for (;;) {
983 const char *line = msg;
984 int linelen = get_one_line(line);
985
986 msg += linelen;
987 if (!linelen || is_blank_line(line, &linelen))
988 break;
989
990 if (!sb)
991 continue;
992 strbuf_grow(sb, linelen + 2);
993 if (!first)
994 strbuf_addstr(sb, line_separator);
995 strbuf_add(sb, line, linelen);
996 first = 0;
997 }
998 return msg;
999}
1000
1001static void parse_commit_message(struct format_commit_context *c)
1002{
1003 const char *msg = c->message + c->message_off;
1004 const char *start = c->message;
1005
1006 msg = skip_blank_lines(msg);
1007 c->subject_off = msg - start;
1008
1009 msg = format_subject(NULL, msg, NULL);
1010 msg = skip_blank_lines(msg);
1011 c->body_off = msg - start;
1012
1013 c->commit_message_parsed = 1;
1014}
1015
1016static void strbuf_wrap(struct strbuf *sb, size_t pos,
1017 size_t width, size_t indent1, size_t indent2)
1018{
1019 struct strbuf tmp = STRBUF_INIT;
1020
1021 if (pos)
1022 strbuf_add(&tmp, sb->buf, pos);
1023 strbuf_add_wrapped_text(&tmp, sb->buf + pos,
1024 cast_size_t_to_int(indent1),
1025 cast_size_t_to_int(indent2),
1026 cast_size_t_to_int(width));
1027 strbuf_swap(&tmp, sb);
1028 strbuf_release(&tmp);
1029}
1030
1031static void rewrap_message_tail(struct strbuf *sb,
1032 struct format_commit_context *c,
1033 size_t new_width, size_t new_indent1,
1034 size_t new_indent2)
1035{
1036 if (c->width == new_width && c->indent1 == new_indent1 &&
1037 c->indent2 == new_indent2)
1038 return;
1039 if (c->wrap_start < sb->len)
1040 strbuf_wrap(sb, c->wrap_start, c->width, c->indent1, c->indent2);
1041 c->wrap_start = sb->len;
1042 c->width = new_width;
1043 c->indent1 = new_indent1;
1044 c->indent2 = new_indent2;
1045}
1046
1047static int format_reflog_person(struct strbuf *sb,
1048 char part,
1049 struct reflog_walk_info *log,
1050 struct date_mode dmode)
1051{
1052 const char *ident;
1053
1054 if (!log)
1055 return 2;
1056
1057 ident = get_reflog_ident(log);
1058 if (!ident)
1059 return 2;
1060
1061 return format_person_part(sb, part, ident, strlen(ident), dmode);
1062}
1063
1064static size_t parse_color(struct strbuf *sb, /* in UTF-8 */
1065 const char *placeholder,
1066 struct format_commit_context *c)
1067{
1068 const char *rest = placeholder;
1069 const char *basic_color = NULL;
1070
1071 if (placeholder[1] == '(') {
1072 const char *begin = placeholder + 2;
1073 const char *end = strchr(begin, ')');
1074 char color[COLOR_MAXLEN];
1075
1076 if (!end)
1077 return 0;
1078
1079 if (skip_prefix(begin, "auto,", &begin)) {
1080 if (!want_color(c->pretty_ctx->color))
1081 return end - placeholder + 1;
1082 } else if (skip_prefix(begin, "always,", &begin)) {
1083 /* nothing to do; we do not respect want_color at all */
1084 } else {
1085 /* the default is the same as "auto" */
1086 if (!want_color(c->pretty_ctx->color))
1087 return end - placeholder + 1;
1088 }
1089
1090 if (color_parse_mem(begin, end - begin, color) < 0)
1091 die(_("unable to parse --pretty format"));
1092 strbuf_addstr(sb, color);
1093 return end - placeholder + 1;
1094 }
1095
1096 /*
1097 * We handle things like "%C(red)" above; for historical reasons, there
1098 * are a few colors that can be specified without parentheses (and
1099 * they cannot support things like "auto" or "always" at all).
1100 */
1101 if (skip_prefix(placeholder + 1, "red", &rest))
1102 basic_color = GIT_COLOR_RED;
1103 else if (skip_prefix(placeholder + 1, "green", &rest))
1104 basic_color = GIT_COLOR_GREEN;
1105 else if (skip_prefix(placeholder + 1, "blue", &rest))
1106 basic_color = GIT_COLOR_BLUE;
1107 else if (skip_prefix(placeholder + 1, "reset", &rest))
1108 basic_color = GIT_COLOR_RESET;
1109
1110 if (basic_color && want_color(c->pretty_ctx->color))
1111 strbuf_addstr(sb, basic_color);
1112
1113 return rest - placeholder;
1114}
1115
1116static size_t parse_padding_placeholder(const char *placeholder,
1117 struct format_commit_context *c)
1118{
1119 const char *ch = placeholder;
1120 enum flush_type flush_type;
1121 int to_column = 0;
1122
1123 switch (*ch++) {
1124 case '<':
1125 flush_type = flush_right;
1126 break;
1127 case '>':
1128 if (*ch == '<') {
1129 flush_type = flush_both;
1130 ch++;
1131 } else if (*ch == '>') {
1132 flush_type = flush_left_and_steal;
1133 ch++;
1134 } else
1135 flush_type = flush_left;
1136 break;
1137 default:
1138 return 0;
1139 }
1140
1141 /* the next value means "wide enough to that column" */
1142 if (*ch == '|') {
1143 to_column = 1;
1144 ch++;
1145 }
1146
1147 if (*ch == '(') {
1148 const char *start = ch + 1;
1149 const char *end = start + strcspn(start, ",)");
1150 char *next;
1151 int width;
1152 if (!*end || end == start)
1153 return 0;
1154 width = strtol(start, &next, 10);
1155
1156 /*
1157 * We need to limit the amount of padding, or otherwise this
1158 * would allow the user to pad the buffer by arbitrarily many
1159 * bytes and thus cause resource exhaustion.
1160 */
1161 if (width < -FORMATTING_LIMIT || width > FORMATTING_LIMIT)
1162 return 0;
1163
1164 if (next == start || width == 0)
1165 return 0;
1166 if (width < 0) {
1167 if (to_column)
1168 width += term_columns();
1169 if (width < 0)
1170 return 0;
1171 }
1172 c->padding = to_column ? -width : width;
1173 c->flush_type = flush_type;
1174
1175 if (*end == ',') {
1176 start = end + 1;
1177 end = strchr(start, ')');
1178 if (!end || end == start)
1179 return 0;
1180 if (starts_with(start, "trunc)"))
1181 c->truncate = trunc_right;
1182 else if (starts_with(start, "ltrunc)"))
1183 c->truncate = trunc_left;
1184 else if (starts_with(start, "mtrunc)"))
1185 c->truncate = trunc_middle;
1186 else
1187 return 0;
1188 } else
1189 c->truncate = trunc_none;
1190
1191 return end - placeholder + 1;
1192 }
1193 return 0;
1194}
1195
1196static int match_placeholder_arg_value(const char *to_parse, const char *candidate,
1197 const char **end, const char **valuestart,
1198 size_t *valuelen)
1199{
1200 const char *p;
1201
1202 if (!(skip_prefix(to_parse, candidate, &p)))
1203 return 0;
1204 if (valuestart) {
1205 if (*p == '=') {
1206 *valuestart = p + 1;
1207 *valuelen = strcspn(*valuestart, ",)");
1208 p = *valuestart + *valuelen;
1209 } else {
1210 if (*p != ',' && *p != ')')
1211 return 0;
1212 *valuestart = NULL;
1213 *valuelen = 0;
1214 }
1215 }
1216 if (*p == ',') {
1217 *end = p + 1;
1218 return 1;
1219 }
1220 if (*p == ')') {
1221 *end = p;
1222 return 1;
1223 }
1224 return 0;
1225}
1226
1227static int match_placeholder_bool_arg(const char *to_parse, const char *candidate,
1228 const char **end, int *val)
1229{
1230 const char *argval;
1231 char *strval;
1232 size_t arglen;
1233 int v;
1234
1235 if (!match_placeholder_arg_value(to_parse, candidate, end, &argval, &arglen))
1236 return 0;
1237
1238 if (!argval) {
1239 *val = 1;
1240 return 1;
1241 }
1242
1243 strval = xstrndup(argval, arglen);
1244 v = git_parse_maybe_bool(strval);
1245 free(strval);
1246
1247 if (v == -1)
1248 return 0;
1249
1250 *val = v;
1251
1252 return 1;
1253}
1254
1255static int format_trailer_match_cb(const struct strbuf *key, void *ud)
1256{
1257 const struct string_list *list = ud;
1258 const struct string_list_item *item;
1259
1260 for_each_string_list_item (item, list) {
1261 if (key->len == (uintptr_t)item->util &&
1262 !strncasecmp(item->string, key->buf, key->len))
1263 return 1;
1264 }
1265 return 0;
1266}
1267
1268static struct strbuf *expand_string_arg(struct strbuf *sb,
1269 const char *argval, size_t arglen)
1270{
1271 char *fmt = xstrndup(argval, arglen);
1272 const char *format = fmt;
1273
1274 strbuf_reset(sb);
1275 while (strbuf_expand_step(sb, &format)) {
1276 size_t len;
1277
1278 if (skip_prefix(format, "%", &format))
1279 strbuf_addch(sb, '%');
1280 else if ((len = strbuf_expand_literal(sb, format)))
1281 format += len;
1282 else
1283 strbuf_addch(sb, '%');
1284 }
1285 free(fmt);
1286 return sb;
1287}
1288
1289int format_set_trailers_options(struct process_trailer_options *opts,
1290 struct string_list *filter_list,
1291 struct strbuf *sepbuf,
1292 struct strbuf *kvsepbuf,
1293 const char **arg,
1294 char **invalid_arg)
1295{
1296 for (;;) {
1297 const char *argval;
1298 size_t arglen;
1299
1300 if (**arg == ')')
1301 break;
1302
1303 if (match_placeholder_arg_value(*arg, "key", arg, &argval, &arglen)) {
1304 uintptr_t len = arglen;
1305
1306 if (!argval)
1307 return -1;
1308
1309 if (len && argval[len - 1] == ':')
1310 len--;
1311 string_list_append(filter_list, argval)->util = (char *)len;
1312
1313 opts->filter = format_trailer_match_cb;
1314 opts->filter_data = filter_list;
1315 opts->only_trailers = 1;
1316 } else if (match_placeholder_arg_value(*arg, "separator", arg, &argval, &arglen)) {
1317 opts->separator = expand_string_arg(sepbuf, argval, arglen);
1318 } else if (match_placeholder_arg_value(*arg, "key_value_separator", arg, &argval, &arglen)) {
1319 opts->key_value_separator = expand_string_arg(kvsepbuf, argval, arglen);
1320 } else if (!match_placeholder_bool_arg(*arg, "only", arg, &opts->only_trailers) &&
1321 !match_placeholder_bool_arg(*arg, "unfold", arg, &opts->unfold) &&
1322 !match_placeholder_bool_arg(*arg, "keyonly", arg, &opts->key_only) &&
1323 !match_placeholder_bool_arg(*arg, "valueonly", arg, &opts->value_only)) {
1324 if (invalid_arg) {
1325 size_t len = strcspn(*arg, ",)");
1326 *invalid_arg = xstrndup(*arg, len);
1327 }
1328 return -1;
1329 }
1330 }
1331 return 0;
1332}
1333
1334static size_t parse_describe_args(const char *start, struct strvec *args)
1335{
1336 struct {
1337 const char *name;
1338 enum {
1339 DESCRIBE_ARG_BOOL,
1340 DESCRIBE_ARG_INTEGER,
1341 DESCRIBE_ARG_STRING,
1342 } type;
1343 } option[] = {
1344 { "tags", DESCRIBE_ARG_BOOL},
1345 { "abbrev", DESCRIBE_ARG_INTEGER },
1346 { "exclude", DESCRIBE_ARG_STRING },
1347 { "match", DESCRIBE_ARG_STRING },
1348 };
1349 const char *arg = start;
1350
1351 for (;;) {
1352 int found = 0;
1353 const char *argval;
1354 size_t arglen = 0;
1355 int optval = 0;
1356 int i;
1357
1358 for (i = 0; !found && i < ARRAY_SIZE(option); i++) {
1359 switch (option[i].type) {
1360 case DESCRIBE_ARG_BOOL:
1361 if (match_placeholder_bool_arg(arg, option[i].name, &arg, &optval)) {
1362 if (optval)
1363 strvec_pushf(args, "--%s", option[i].name);
1364 else
1365 strvec_pushf(args, "--no-%s", option[i].name);
1366 found = 1;
1367 }
1368 break;
1369 case DESCRIBE_ARG_INTEGER:
1370 if (match_placeholder_arg_value(arg, option[i].name, &arg,
1371 &argval, &arglen)) {
1372 char *endptr;
1373 if (!arglen)
1374 return 0;
1375 strtol(argval, &endptr, 10);
1376 if (endptr - argval != arglen)
1377 return 0;
1378 strvec_pushf(args, "--%s=%.*s", option[i].name, (int)arglen, argval);
1379 found = 1;
1380 }
1381 break;
1382 case DESCRIBE_ARG_STRING:
1383 if (match_placeholder_arg_value(arg, option[i].name, &arg,
1384 &argval, &arglen)) {
1385 if (!arglen)
1386 return 0;
1387 strvec_pushf(args, "--%s=%.*s", option[i].name, (int)arglen, argval);
1388 found = 1;
1389 }
1390 break;
1391 }
1392 }
1393 if (!found)
1394 break;
1395
1396 }
1397 return arg - start;
1398}
1399
1400
1401static int parse_decoration_option(const char **arg,
1402 const char *name,
1403 char **opt)
1404{
1405 const char *argval;
1406 size_t arglen;
1407
1408 if (match_placeholder_arg_value(*arg, name, arg, &argval, &arglen)) {
1409 struct strbuf sb = STRBUF_INIT;
1410
1411 expand_string_arg(&sb, argval, arglen);
1412 *opt = strbuf_detach(&sb, NULL);
1413 return 1;
1414 }
1415 return 0;
1416}
1417
1418static void parse_decoration_options(const char **arg,
1419 struct decoration_options *opts)
1420{
1421 while (parse_decoration_option(arg, "prefix", &opts->prefix) ||
1422 parse_decoration_option(arg, "suffix", &opts->suffix) ||
1423 parse_decoration_option(arg, "separator", &opts->separator) ||
1424 parse_decoration_option(arg, "pointer", &opts->pointer) ||
1425 parse_decoration_option(arg, "tag", &opts->tag))
1426 ;
1427}
1428
1429static void free_decoration_options(const struct decoration_options *opts)
1430{
1431 free(opts->prefix);
1432 free(opts->suffix);
1433 free(opts->separator);
1434 free(opts->pointer);
1435 free(opts->tag);
1436}
1437
1438static size_t format_commit_one(struct strbuf *sb, /* in UTF-8 */
1439 const char *placeholder,
1440 void *context)
1441{
1442 struct format_commit_context *c = context;
1443 const struct commit *commit = c->commit;
1444 const char *msg = c->message;
1445 struct commit_list *p;
1446 const char *arg, *eol;
1447 size_t res;
1448 char **slot;
1449
1450 /* these are independent of the commit */
1451 res = strbuf_expand_literal(sb, placeholder);
1452 if (res)
1453 return res;
1454
1455 switch (placeholder[0]) {
1456 case 'C':
1457 if (starts_with(placeholder + 1, "(auto)")) {
1458 c->auto_color = c->pretty_ctx->color;
1459 if (want_color(c->auto_color) && sb->len)
1460 strbuf_addstr(sb, GIT_COLOR_RESET);
1461 return 7; /* consumed 7 bytes, "C(auto)" */
1462 } else {
1463 int ret = parse_color(sb, placeholder, c);
1464 if (ret)
1465 c->auto_color = GIT_COLOR_NEVER;
1466 /*
1467 * Otherwise, we decided to treat %C<unknown>
1468 * as a literal string, and the previous
1469 * %C(auto) is still valid.
1470 */
1471 return ret;
1472 }
1473 case 'w':
1474 if (placeholder[1] == '(') {
1475 unsigned long width = 0, indent1 = 0, indent2 = 0;
1476 char *next;
1477 const char *start = placeholder + 2;
1478 const char *end = strchr(start, ')');
1479 if (!end)
1480 return 0;
1481 if (end > start) {
1482 width = strtoul(start, &next, 10);
1483 if (*next == ',') {
1484 indent1 = strtoul(next + 1, &next, 10);
1485 if (*next == ',') {
1486 indent2 = strtoul(next + 1,
1487 &next, 10);
1488 }
1489 }
1490 if (*next != ')')
1491 return 0;
1492 }
1493
1494 /*
1495 * We need to limit the format here as it allows the
1496 * user to prepend arbitrarily many bytes to the buffer
1497 * when rewrapping.
1498 */
1499 if (width > FORMATTING_LIMIT ||
1500 indent1 > FORMATTING_LIMIT ||
1501 indent2 > FORMATTING_LIMIT)
1502 return 0;
1503 rewrap_message_tail(sb, c, width, indent1, indent2);
1504 return end - placeholder + 1;
1505 } else
1506 return 0;
1507
1508 case '<':
1509 case '>':
1510 return parse_padding_placeholder(placeholder, c);
1511 }
1512
1513 if (skip_prefix(placeholder, "(describe", &arg)) {
1514 struct child_process cmd = CHILD_PROCESS_INIT;
1515 struct strbuf out = STRBUF_INIT;
1516 struct strbuf err = STRBUF_INIT;
1517 struct pretty_print_describe_status *describe_status;
1518
1519 describe_status = c->pretty_ctx->describe_status;
1520 if (describe_status) {
1521 if (!describe_status->max_invocations)
1522 return 0;
1523 describe_status->max_invocations--;
1524 }
1525
1526 cmd.git_cmd = 1;
1527 strvec_push(&cmd.args, "describe");
1528
1529 if (*arg == ':') {
1530 arg++;
1531 arg += parse_describe_args(arg, &cmd.args);
1532 }
1533
1534 if (*arg != ')') {
1535 child_process_clear(&cmd);
1536 return 0;
1537 }
1538
1539 strvec_push(&cmd.args, oid_to_hex(&commit->object.oid));
1540 pipe_command(&cmd, NULL, 0, &out, 0, &err, 0);
1541 strbuf_rtrim(&out);
1542 strbuf_addbuf(sb, &out);
1543 strbuf_release(&out);
1544 strbuf_release(&err);
1545 return arg - placeholder + 1;
1546 }
1547
1548 /* these depend on the commit */
1549 if (!commit->object.parsed)
1550 parse_object(the_repository, &commit->object.oid);
1551
1552 switch (placeholder[0]) {
1553 case 'H': /* commit hash */
1554 strbuf_addstr(sb, diff_get_color(c->auto_color, DIFF_COMMIT));
1555 strbuf_addstr(sb, oid_to_hex(&commit->object.oid));
1556 strbuf_addstr(sb, diff_get_color(c->auto_color, DIFF_RESET));
1557 return 1;
1558 case 'h': /* abbreviated commit hash */
1559 strbuf_addstr(sb, diff_get_color(c->auto_color, DIFF_COMMIT));
1560 strbuf_add_unique_abbrev(sb, &commit->object.oid,
1561 c->pretty_ctx->abbrev);
1562 strbuf_addstr(sb, diff_get_color(c->auto_color, DIFF_RESET));
1563 return 1;
1564 case 'T': /* tree hash */
1565 strbuf_addstr(sb, oid_to_hex(get_commit_tree_oid(commit)));
1566 return 1;
1567 case 't': /* abbreviated tree hash */
1568 strbuf_add_unique_abbrev(sb,
1569 get_commit_tree_oid(commit),
1570 c->pretty_ctx->abbrev);
1571 return 1;
1572 case 'P': /* parent hashes */
1573 for (p = commit->parents; p; p = p->next) {
1574 if (p != commit->parents)
1575 strbuf_addch(sb, ' ');
1576 strbuf_addstr(sb, oid_to_hex(&p->item->object.oid));
1577 }
1578 return 1;
1579 case 'p': /* abbreviated parent hashes */
1580 for (p = commit->parents; p; p = p->next) {
1581 if (p != commit->parents)
1582 strbuf_addch(sb, ' ');
1583 strbuf_add_unique_abbrev(sb, &p->item->object.oid,
1584 c->pretty_ctx->abbrev);
1585 }
1586 return 1;
1587 case 'm': /* left/right/bottom */
1588 strbuf_addstr(sb, get_revision_mark(NULL, commit));
1589 return 1;
1590 case 'd':
1591 format_decorations(sb, commit, c->auto_color, NULL);
1592 return 1;
1593 case 'D':
1594 {
1595 const struct decoration_options opts = {
1596 .prefix = (char *) "",
1597 .suffix = (char *) "",
1598 };
1599
1600 format_decorations(sb, commit, c->auto_color, &opts);
1601 return 1;
1602 }
1603 case 'S': /* tag/branch like --source */
1604 if (!(c->pretty_ctx->rev && c->pretty_ctx->rev->sources))
1605 return 0;
1606 slot = revision_sources_at(c->pretty_ctx->rev->sources, commit);
1607 if (!(slot && *slot))
1608 return 0;
1609 strbuf_addstr(sb, *slot);
1610 return 1;
1611 case 'g': /* reflog info */
1612 switch(placeholder[1]) {
1613 case 'd': /* reflog selector */
1614 case 'D':
1615 if (c->pretty_ctx->reflog_info)
1616 get_reflog_selector(sb,
1617 c->pretty_ctx->reflog_info,
1618 c->pretty_ctx->date_mode,
1619 c->pretty_ctx->date_mode_explicit,
1620 (placeholder[1] == 'd'));
1621 return 2;
1622 case 's': /* reflog message */
1623 if (c->pretty_ctx->reflog_info)
1624 get_reflog_message(sb, c->pretty_ctx->reflog_info);
1625 return 2;
1626 case 'n':
1627 case 'N':
1628 case 'e':
1629 case 'E':
1630 return format_reflog_person(sb,
1631 placeholder[1],
1632 c->pretty_ctx->reflog_info,
1633 c->pretty_ctx->date_mode);
1634 }
1635 return 0; /* unknown %g placeholder */
1636 case 'N':
1637 if (c->pretty_ctx->notes_message) {
1638 strbuf_addstr(sb, c->pretty_ctx->notes_message);
1639 return 1;
1640 }
1641 return 0;
1642 }
1643
1644 if (placeholder[0] == 'G') {
1645 if (!c->signature_check.result)
1646 check_commit_signature(c->commit, &(c->signature_check));
1647 switch (placeholder[1]) {
1648 case 'G':
1649 if (c->signature_check.output)
1650 strbuf_addstr(sb, c->signature_check.output);
1651 break;
1652 case '?':
1653 switch (c->signature_check.result) {
1654 case 'G':
1655 switch (c->signature_check.trust_level) {
1656 case TRUST_UNDEFINED:
1657 case TRUST_NEVER:
1658 strbuf_addch(sb, 'U');
1659 break;
1660 default:
1661 strbuf_addch(sb, 'G');
1662 break;
1663 }
1664 break;
1665 case 'B':
1666 case 'E':
1667 case 'N':
1668 case 'X':
1669 case 'Y':
1670 case 'R':
1671 strbuf_addch(sb, c->signature_check.result);
1672 }
1673 break;
1674 case 'S':
1675 if (c->signature_check.signer)
1676 strbuf_addstr(sb, c->signature_check.signer);
1677 break;
1678 case 'K':
1679 if (c->signature_check.key)
1680 strbuf_addstr(sb, c->signature_check.key);
1681 break;
1682 case 'F':
1683 if (c->signature_check.fingerprint)
1684 strbuf_addstr(sb, c->signature_check.fingerprint);
1685 break;
1686 case 'P':
1687 if (c->signature_check.primary_key_fingerprint)
1688 strbuf_addstr(sb, c->signature_check.primary_key_fingerprint);
1689 break;
1690 case 'T':
1691 strbuf_addstr(sb, gpg_trust_level_to_str(c->signature_check.trust_level));
1692 break;
1693 default:
1694 return 0;
1695 }
1696 return 2;
1697 }
1698
1699 if (skip_prefix(placeholder, "(decorate", &arg)) {
1700 struct decoration_options opts = { NULL };
1701 size_t ret = 0;
1702
1703 if (*arg == ':') {
1704 arg++;
1705 parse_decoration_options(&arg, &opts);
1706 }
1707 if (*arg == ')') {
1708 format_decorations(sb, commit, c->auto_color, &opts);
1709 ret = arg - placeholder + 1;
1710 }
1711
1712 free_decoration_options(&opts);
1713 return ret;
1714 }
1715
1716 /* For the rest we have to parse the commit header. */
1717 if (!c->commit_header_parsed) {
1718 msg = c->message =
1719 repo_logmsg_reencode(c->repository, commit,
1720 &c->commit_encoding, "UTF-8");
1721 parse_commit_header(c);
1722 }
1723
1724 switch (placeholder[0]) {
1725 case 'a': /* author ... */
1726 return format_person_part(sb, placeholder[1],
1727 msg + c->author.off, c->author.len,
1728 c->pretty_ctx->date_mode);
1729 case 'c': /* committer ... */
1730 return format_person_part(sb, placeholder[1],
1731 msg + c->committer.off, c->committer.len,
1732 c->pretty_ctx->date_mode);
1733 case 'e': /* encoding */
1734 if (c->commit_encoding)
1735 strbuf_addstr(sb, c->commit_encoding);
1736 return 1;
1737 case 'B': /* raw body */
1738 /* message_off is always left at the initial newline */
1739 strbuf_addstr(sb, msg + c->message_off + 1);
1740 return 1;
1741 }
1742
1743 /* Now we need to parse the commit message. */
1744 if (!c->commit_message_parsed)
1745 parse_commit_message(c);
1746
1747 switch (placeholder[0]) {
1748 case 's': /* subject */
1749 format_subject(sb, msg + c->subject_off, " ");
1750 return 1;
1751 case 'f': /* sanitized subject */
1752 eol = strchrnul(msg + c->subject_off, '\n');
1753 format_sanitized_subject(sb, msg + c->subject_off, eol - (msg + c->subject_off));
1754 return 1;
1755 case 'b': /* body */
1756 strbuf_addstr(sb, msg + c->body_off);
1757 return 1;
1758 }
1759
1760 if (skip_prefix(placeholder, "(trailers", &arg)) {
1761 struct process_trailer_options opts = PROCESS_TRAILER_OPTIONS_INIT;
1762 struct string_list filter_list = STRING_LIST_INIT_NODUP;
1763 struct strbuf sepbuf = STRBUF_INIT;
1764 struct strbuf kvsepbuf = STRBUF_INIT;
1765 size_t ret = 0;
1766
1767 opts.no_divider = 1;
1768
1769 if (*arg == ':') {
1770 arg++;
1771 if (format_set_trailers_options(&opts, &filter_list, &sepbuf, &kvsepbuf, &arg, NULL))
1772 goto trailer_out;
1773 }
1774 if (*arg == ')') {
1775 format_trailers_from_commit(&opts, msg + c->subject_off, sb);
1776 ret = arg - placeholder + 1;
1777 }
1778 trailer_out:
1779 string_list_clear(&filter_list, 0);
1780 strbuf_release(&kvsepbuf);
1781 strbuf_release(&sepbuf);
1782 return ret;
1783 }
1784
1785 return 0; /* unknown placeholder */
1786}
1787
1788static size_t format_and_pad_commit(struct strbuf *sb, /* in UTF-8 */
1789 const char *placeholder,
1790 struct format_commit_context *c)
1791{
1792 struct strbuf local_sb = STRBUF_INIT;
1793 size_t total_consumed = 0;
1794 int len, padding = c->padding;
1795
1796 if (padding < 0) {
1797 const char *start = strrchr(sb->buf, '\n');
1798 int occupied;
1799 if (!start)
1800 start = sb->buf;
1801 occupied = utf8_strnwidth(start, strlen(start), 1);
1802 occupied += c->pretty_ctx->graph_width;
1803 padding = (-padding) - occupied;
1804 }
1805 while (1) {
1806 int modifier = *placeholder == 'C';
1807 size_t consumed = format_commit_one(&local_sb, placeholder, c);
1808 total_consumed += consumed;
1809
1810 if (!modifier)
1811 break;
1812
1813 placeholder += consumed;
1814 if (*placeholder != '%')
1815 break;
1816 placeholder++;
1817 total_consumed++;
1818 }
1819 len = utf8_strnwidth(local_sb.buf, local_sb.len, 1);
1820
1821 if (c->flush_type == flush_left_and_steal) {
1822 const char *ch = sb->buf + sb->len - 1;
1823 while (len > padding && ch > sb->buf) {
1824 const char *p;
1825 if (*ch == ' ') {
1826 ch--;
1827 padding++;
1828 continue;
1829 }
1830 /* check for trailing ansi sequences */
1831 if (*ch != 'm')
1832 break;
1833 p = ch - 1;
1834 while (p > sb->buf && ch - p < 10 && *p != '\033')
1835 p--;
1836 if (*p != '\033' ||
1837 ch + 1 - p != display_mode_esc_sequence_len(p))
1838 break;
1839 /*
1840 * got a good ansi sequence, put it back to
1841 * local_sb as we're cutting sb
1842 */
1843 strbuf_insert(&local_sb, 0, p, ch + 1 - p);
1844 ch = p - 1;
1845 }
1846 strbuf_setlen(sb, ch + 1 - sb->buf);
1847 c->flush_type = flush_left;
1848 }
1849
1850 if (len > padding) {
1851 switch (c->truncate) {
1852 case trunc_left:
1853 strbuf_utf8_replace(&local_sb,
1854 0, len - (padding - 2),
1855 "..");
1856 break;
1857 case trunc_middle:
1858 strbuf_utf8_replace(&local_sb,
1859 padding / 2 - 1,
1860 len - (padding - 2),
1861 "..");
1862 break;
1863 case trunc_right:
1864 strbuf_utf8_replace(&local_sb,
1865 padding - 2, len - (padding - 2),
1866 "..");
1867 break;
1868 case trunc_none:
1869 break;
1870 }
1871 strbuf_addbuf(sb, &local_sb);
1872 } else {
1873 size_t sb_len = sb->len, offset = 0;
1874 if (c->flush_type == flush_left)
1875 offset = padding - len;
1876 else if (c->flush_type == flush_both)
1877 offset = (padding - len) / 2;
1878 /*
1879 * we calculate padding in columns, now
1880 * convert it back to chars
1881 */
1882 padding = padding - len + local_sb.len;
1883 strbuf_addchars(sb, ' ', padding);
1884 memcpy(sb->buf + sb_len + offset, local_sb.buf,
1885 local_sb.len);
1886 }
1887 strbuf_release(&local_sb);
1888 c->flush_type = no_flush;
1889 return total_consumed;
1890}
1891
1892static size_t format_commit_item(struct strbuf *sb, /* in UTF-8 */
1893 const char *placeholder,
1894 struct format_commit_context *context)
1895{
1896 size_t consumed, orig_len;
1897 enum {
1898 NO_MAGIC,
1899 ADD_LF_BEFORE_NON_EMPTY,
1900 DEL_LF_BEFORE_EMPTY,
1901 ADD_SP_BEFORE_NON_EMPTY
1902 } magic = NO_MAGIC;
1903
1904 switch (placeholder[0]) {
1905 case '-':
1906 magic = DEL_LF_BEFORE_EMPTY;
1907 break;
1908 case '+':
1909 magic = ADD_LF_BEFORE_NON_EMPTY;
1910 break;
1911 case ' ':
1912 magic = ADD_SP_BEFORE_NON_EMPTY;
1913 break;
1914 default:
1915 break;
1916 }
1917 if (magic != NO_MAGIC) {
1918 placeholder++;
1919
1920 switch (placeholder[0]) {
1921 case 'w':
1922 /*
1923 * `%+w()` cannot ever expand to a non-empty string,
1924 * and it potentially changes the layout of preceding
1925 * contents. We're thus not able to handle the magic in
1926 * this combination and refuse the pattern.
1927 */
1928 return 0;
1929 };
1930 }
1931
1932 orig_len = sb->len;
1933 if (context->flush_type == no_flush)
1934 consumed = format_commit_one(sb, placeholder, context);
1935 else
1936 consumed = format_and_pad_commit(sb, placeholder, context);
1937 if (magic == NO_MAGIC)
1938 return consumed;
1939
1940 if ((orig_len == sb->len) && magic == DEL_LF_BEFORE_EMPTY) {
1941 while (sb->len && sb->buf[sb->len - 1] == '\n')
1942 strbuf_setlen(sb, sb->len - 1);
1943 } else if (orig_len != sb->len) {
1944 if (magic == ADD_LF_BEFORE_NON_EMPTY)
1945 strbuf_insertstr(sb, orig_len, "\n");
1946 else if (magic == ADD_SP_BEFORE_NON_EMPTY)
1947 strbuf_insertstr(sb, orig_len, " ");
1948 }
1949 return consumed + 1;
1950}
1951
1952void userformat_find_requirements(const char *fmt, struct userformat_want *w)
1953{
1954 if (!fmt) {
1955 if (!user_format)
1956 return;
1957 fmt = user_format;
1958 }
1959 while ((fmt = strchr(fmt, '%'))) {
1960 fmt++;
1961 if (skip_prefix(fmt, "%", &fmt))
1962 continue;
1963
1964 if (*fmt == '+' || *fmt == '-' || *fmt == ' ')
1965 fmt++;
1966
1967 switch (*fmt) {
1968 case 'N':
1969 w->notes = 1;
1970 break;
1971 case 'S':
1972 w->source = 1;
1973 break;
1974 case 'd':
1975 case 'D':
1976 w->decorate = 1;
1977 break;
1978 case '(':
1979 if (starts_with(fmt + 1, "decorate"))
1980 w->decorate = 1;
1981 break;
1982 }
1983 }
1984}
1985
1986void repo_format_commit_message(struct repository *r,
1987 const struct commit *commit,
1988 const char *format, struct strbuf *sb,
1989 const struct pretty_print_context *pretty_ctx)
1990{
1991 struct format_commit_context context = {
1992 .repository = r,
1993 .commit = commit,
1994 .pretty_ctx = pretty_ctx,
1995 .wrap_start = sb->len
1996 };
1997 const char *output_enc = pretty_ctx->output_encoding;
1998 const char *utf8 = "UTF-8";
1999
2000 while (strbuf_expand_step(sb, &format)) {
2001 size_t len;
2002
2003 if (skip_prefix(format, "%", &format))
2004 strbuf_addch(sb, '%');
2005 else if ((len = format_commit_item(sb, format, &context)))
2006 format += len;
2007 else
2008 strbuf_addch(sb, '%');
2009 }
2010 rewrap_message_tail(sb, &context, 0, 0, 0);
2011
2012 /*
2013 * Convert output to an actual output encoding; note that
2014 * format_commit_item() will always use UTF-8, so we don't
2015 * have to bother if that's what the output wants.
2016 */
2017 if (output_enc) {
2018 if (same_encoding(utf8, output_enc))
2019 output_enc = NULL;
2020 } else {
2021 if (context.commit_encoding &&
2022 !same_encoding(context.commit_encoding, utf8))
2023 output_enc = context.commit_encoding;
2024 }
2025
2026 if (output_enc) {
2027 size_t outsz;
2028 char *out = reencode_string_len(sb->buf, sb->len,
2029 output_enc, utf8, &outsz);
2030 if (out)
2031 strbuf_attach(sb, out, outsz, outsz + 1);
2032 }
2033
2034 free(context.commit_encoding);
2035 repo_unuse_commit_buffer(r, commit, context.message);
2036 signature_check_clear(&context.signature_check);
2037}
2038
2039static void pp_header(struct pretty_print_context *pp,
2040 const char *encoding,
2041 const struct commit *commit,
2042 const char **msg_p,
2043 struct strbuf *sb)
2044{
2045 int parents_shown = 0;
2046
2047 for (;;) {
2048 const char *name, *line = *msg_p;
2049 int linelen = get_one_line(*msg_p);
2050
2051 if (!linelen)
2052 return;
2053 *msg_p += linelen;
2054
2055 if (linelen == 1)
2056 /* End of header */
2057 return;
2058
2059 if (pp->fmt == CMIT_FMT_RAW) {
2060 strbuf_add(sb, line, linelen);
2061 continue;
2062 }
2063
2064 if (starts_with(line, "parent ")) {
2065 if (linelen != the_hash_algo->hexsz + 8)
2066 die("bad parent line in commit");
2067 continue;
2068 }
2069
2070 if (!parents_shown) {
2071 unsigned num = commit_list_count(commit->parents);
2072 /* with enough slop */
2073 strbuf_grow(sb, num * (GIT_MAX_HEXSZ + 10) + 20);
2074 add_merge_info(pp, sb, commit);
2075 parents_shown = 1;
2076 }
2077
2078 /*
2079 * MEDIUM == DEFAULT shows only author with dates.
2080 * FULL shows both authors but not dates.
2081 * FULLER shows both authors and dates.
2082 */
2083 if (skip_prefix(line, "author ", &name)) {
2084 strbuf_grow(sb, linelen + 80);
2085 pp_user_info(pp, "Author", sb, name, encoding);
2086 }
2087 if (skip_prefix(line, "committer ", &name) &&
2088 (pp->fmt == CMIT_FMT_FULL || pp->fmt == CMIT_FMT_FULLER)) {
2089 strbuf_grow(sb, linelen + 80);
2090 pp_user_info(pp, "Commit", sb, name, encoding);
2091 }
2092 }
2093}
2094
2095void pp_email_subject(struct pretty_print_context *pp,
2096 const char **msg_p,
2097 struct strbuf *sb,
2098 const char *encoding,
2099 int need_8bit_cte)
2100{
2101 static const int max_length = 78; /* per rfc2047 */
2102 struct strbuf title;
2103
2104 strbuf_init(&title, 80);
2105 *msg_p = format_subject(&title, *msg_p,
2106 pp->preserve_subject ? "\n" : " ");
2107
2108 strbuf_grow(sb, title.len + 1024);
2109 fmt_output_email_subject(sb, pp->rev);
2110 if (pp->encode_email_headers &&
2111 needs_rfc2047_encoding(title.buf, title.len))
2112 add_rfc2047(sb, title.buf, title.len,
2113 encoding, RFC2047_SUBJECT);
2114 else
2115 strbuf_add_wrapped_bytes(sb, title.buf, title.len,
2116 -last_line_length(sb), 1, max_length);
2117 strbuf_addch(sb, '\n');
2118
2119 if (need_8bit_cte == 0) {
2120 int i;
2121 for (i = 0; i < pp->in_body_headers.nr; i++) {
2122 if (has_non_ascii(pp->in_body_headers.items[i].string)) {
2123 need_8bit_cte = 1;
2124 break;
2125 }
2126 }
2127 }
2128
2129 if (need_8bit_cte > 0) {
2130 const char *header_fmt =
2131 "MIME-Version: 1.0\n"
2132 "Content-Type: text/plain; charset=%s\n"
2133 "Content-Transfer-Encoding: 8bit\n";
2134 strbuf_addf(sb, header_fmt, encoding);
2135 }
2136 if (pp->after_subject) {
2137 strbuf_addstr(sb, pp->after_subject);
2138 }
2139
2140 strbuf_addch(sb, '\n');
2141
2142 if (pp->in_body_headers.nr) {
2143 int i;
2144 for (i = 0; i < pp->in_body_headers.nr; i++) {
2145 strbuf_addstr(sb, pp->in_body_headers.items[i].string);
2146 free(pp->in_body_headers.items[i].string);
2147 }
2148 string_list_clear(&pp->in_body_headers, 0);
2149 strbuf_addch(sb, '\n');
2150 }
2151
2152 strbuf_release(&title);
2153}
2154
2155static int pp_utf8_width(const char *start, const char *end)
2156{
2157 int width = 0;
2158 size_t remain = end - start;
2159
2160 while (remain) {
2161 int n = utf8_width(&start, &remain);
2162 if (n < 0 || !start)
2163 return -1;
2164 width += n;
2165 }
2166 return width;
2167}
2168
2169static void strbuf_add_tabexpand(struct strbuf *sb, struct grep_opt *opt,
2170 enum git_colorbool color, int tabwidth, const char *line,
2171 int linelen)
2172{
2173 const char *tab;
2174
2175 while ((tab = memchr(line, '\t', linelen)) != NULL) {
2176 int width = pp_utf8_width(line, tab);
2177
2178 /*
2179 * If it wasn't well-formed utf8, or it
2180 * had characters with badly defined
2181 * width (control characters etc), just
2182 * give up on trying to align things.
2183 */
2184 if (width < 0)
2185 break;
2186
2187 /* Output the data .. */
2188 append_line_with_color(sb, opt, line, tab - line, color,
2189 GREP_CONTEXT_BODY,
2190 GREP_HEADER_FIELD_MAX);
2191
2192 /* .. and the de-tabified tab */
2193 strbuf_addchars(sb, ' ', tabwidth - (width % tabwidth));
2194
2195 /* Skip over the printed part .. */
2196 linelen -= tab + 1 - line;
2197 line = tab + 1;
2198 }
2199
2200 /*
2201 * Print out everything after the last tab without
2202 * worrying about width - there's nothing more to
2203 * align.
2204 */
2205 append_line_with_color(sb, opt, line, linelen, color, GREP_CONTEXT_BODY,
2206 GREP_HEADER_FIELD_MAX);
2207}
2208
2209/*
2210 * pp_handle_indent() prints out the indentation, and
2211 * the whole line (without the final newline), after
2212 * de-tabifying.
2213 */
2214static void pp_handle_indent(struct pretty_print_context *pp,
2215 struct strbuf *sb, int indent,
2216 const char *line, int linelen)
2217{
2218 struct grep_opt *opt = pp->rev ? &pp->rev->grep_filter : NULL;
2219
2220 strbuf_addchars(sb, ' ', indent);
2221 if (pp->expand_tabs_in_log)
2222 strbuf_add_tabexpand(sb, opt, pp->color, pp->expand_tabs_in_log,
2223 line, linelen);
2224 else
2225 append_line_with_color(sb, opt, line, linelen, pp->color,
2226 GREP_CONTEXT_BODY,
2227 GREP_HEADER_FIELD_MAX);
2228}
2229
2230static int is_mboxrd_from(const char *line, int len)
2231{
2232 /*
2233 * a line matching /^From $/ here would only have len == 4
2234 * at this point because is_empty_line would've trimmed all
2235 * trailing space
2236 */
2237 return len > 4 && starts_with(line + strspn(line, ">"), "From ");
2238}
2239
2240void pp_remainder(struct pretty_print_context *pp,
2241 const char **msg_p,
2242 struct strbuf *sb,
2243 int indent)
2244{
2245 struct grep_opt *opt = pp->rev ? &pp->rev->grep_filter : NULL;
2246 int first = 1;
2247
2248 for (;;) {
2249 const char *line = *msg_p;
2250 int linelen = get_one_line(line);
2251 *msg_p += linelen;
2252
2253 if (!linelen)
2254 break;
2255
2256 if (is_blank_line(line, &linelen)) {
2257 if (first)
2258 continue;
2259 if (pp->fmt == CMIT_FMT_SHORT)
2260 break;
2261 }
2262 first = 0;
2263
2264 strbuf_grow(sb, linelen + indent + 20);
2265 if (indent)
2266 pp_handle_indent(pp, sb, indent, line, linelen);
2267 else if (pp->expand_tabs_in_log)
2268 strbuf_add_tabexpand(sb, opt, pp->color,
2269 pp->expand_tabs_in_log, line,
2270 linelen);
2271 else {
2272 if (pp->fmt == CMIT_FMT_MBOXRD &&
2273 is_mboxrd_from(line, linelen))
2274 strbuf_addch(sb, '>');
2275
2276 append_line_with_color(sb, opt, line, linelen,
2277 pp->color, GREP_CONTEXT_BODY,
2278 GREP_HEADER_FIELD_MAX);
2279 }
2280 strbuf_addch(sb, '\n');
2281 }
2282}
2283
2284void pretty_print_commit(struct pretty_print_context *pp,
2285 const struct commit *commit,
2286 struct strbuf *sb)
2287{
2288 unsigned long beginning_of_body;
2289 int indent = 4;
2290 const char *msg;
2291 const char *reencoded;
2292 const char *encoding;
2293 int need_8bit_cte = pp->need_8bit_cte;
2294
2295 if (pp->fmt == CMIT_FMT_USERFORMAT) {
2296 repo_format_commit_message(the_repository, commit,
2297 user_format, sb, pp);
2298 return;
2299 }
2300
2301 encoding = get_log_output_encoding();
2302 msg = reencoded = repo_logmsg_reencode(the_repository, commit, NULL,
2303 encoding);
2304
2305 if (pp->fmt == CMIT_FMT_ONELINE || cmit_fmt_is_mail(pp->fmt))
2306 indent = 0;
2307
2308 /*
2309 * We need to check and emit Content-type: to mark it
2310 * as 8-bit if we haven't done so.
2311 */
2312 if (cmit_fmt_is_mail(pp->fmt) && need_8bit_cte == 0) {
2313 int i, ch, in_body;
2314
2315 for (in_body = i = 0; (ch = msg[i]); i++) {
2316 if (!in_body) {
2317 /* author could be non 7-bit ASCII but
2318 * the log may be so; skip over the
2319 * header part first.
2320 */
2321 if (ch == '\n' && msg[i+1] == '\n')
2322 in_body = 1;
2323 }
2324 else if (non_ascii(ch)) {
2325 need_8bit_cte = 1;
2326 break;
2327 }
2328 }
2329 }
2330
2331 pp_header(pp, encoding, commit, &msg, sb);
2332 if (pp->fmt != CMIT_FMT_ONELINE && !cmit_fmt_is_mail(pp->fmt)) {
2333 strbuf_addch(sb, '\n');
2334 }
2335
2336 /* Skip excess blank lines at the beginning of body, if any... */
2337 msg = skip_blank_lines(msg);
2338
2339 /* These formats treat the title line specially. */
2340 if (pp->fmt == CMIT_FMT_ONELINE) {
2341 msg = format_subject(sb, msg, " ");
2342 strbuf_addch(sb, '\n');
2343 } else if (cmit_fmt_is_mail(pp->fmt))
2344 pp_email_subject(pp, &msg, sb, encoding, need_8bit_cte);
2345
2346 beginning_of_body = sb->len;
2347 if (pp->fmt != CMIT_FMT_ONELINE)
2348 pp_remainder(pp, &msg, sb, indent);
2349 strbuf_rtrim(sb);
2350
2351 /* Make sure there is an EOLN for the non-oneline case */
2352 if (pp->fmt != CMIT_FMT_ONELINE)
2353 strbuf_addch(sb, '\n');
2354
2355 /*
2356 * The caller may append additional body text in e-mail
2357 * format. Make sure we did not strip the blank line
2358 * between the header and the body.
2359 */
2360 if (cmit_fmt_is_mail(pp->fmt) && sb->len <= beginning_of_body)
2361 strbuf_addch(sb, '\n');
2362
2363 repo_unuse_commit_buffer(the_repository, commit, reencoded);
2364}
2365
2366void pp_commit_easy(enum cmit_fmt fmt, const struct commit *commit,
2367 struct strbuf *sb)
2368{
2369 struct pretty_print_context pp = {0};
2370 pp.fmt = fmt;
2371 pretty_print_commit(&pp, commit, sb);
2372}